Breed differences in adult animals are determined during fetal development. If interventions are to be developed that influence growth of muscle and fat, it is important to know at which time during gestation breed differences appear and are fixed. The objective of this study was to characterize fetal development in cattle of different breeds. Pregnant cows of 4 cattle breeds with different gro...

The present study was carried out on data of 3,425 Frieswal cattle (Holstein Friesian × Sahiwal cattle) maintained at Military Farm, Pimpri, Pune, Maharashtra. Total 9,094 lactation records were collected from cows born to 239 sires. analyzed using SAS software. normalized and utilized for studying effect genetic non-genetic factors milk yield. PROC GLM procedures used quantify the considered p...

the aim of this study was to evaluate the concentrations of reproductive hormones in blood plasma and in follicular fluids of different sized follicles during various stages of the estrous cycle in holstein cattle. jugular blood samples from 42 adult holstein cattle were collected immediately after the slaughter. antral fluids from small (4-5 mm), medium (6-9 mm) and large (10-20 mm) follicles ...

This study was conducted at Sarsha Upazila in Jessore district of Bangladesh to capture a scenario of productive and reproductive performances of different genotypes such as Holstein-Friesian cross, Sahiwal cross, Sindhi cross with local, and indigenous dairy cows. Data were collected by live survey on 100 cows, divided into 4 groups each consists of 25 animals. Results shows that age at first ...

Two high-density single nucleotide polymorphism (SNP) genotyping arrays have recently become available for bovine genomic analyses, the Illumina High-Density Bovine BeadChip Array (777,962 SNP) and the Affymetrix Axiom Genome-Wide BOS 1 Array (648,874 SNP). These products each have unique design and chemistry attributes, and the extent of marker overlap and their potential utility for quantitat...

Whole-genome re-sequencing, alignment and annotation analyses were undertaken for 12 sires representing four important cattle breeds in Brazil: Guzerat (multi-purpose), Gyr, Girolando and Holstein (dairy production). A total of approximately 4.3 billion reads from an Illumina HiSeq 2000 sequencer generated for each animal 10.7 to 16.4-fold genome coverage. A total of 27,441,279 single nucleotid...

BACKGROUND Perosomus elumbis (PE) is a congenital defect that has been observed sporadically in Holstein cattle for many years. However, several cases have been reported in recent years and this may indicate an unrecognised spread of a mutant allele in the Holstein population worldwide. Two cases in Danish Holstein calves are reported to provide details on the phenotype. CASE PRESENTATION Two...

mastitis in cattle is a serious problem which causes considerable economic losses in the dairy cattle herds. the aim of this survey was to identify mycoflorain milk of healthy, clinical and subclinical mastitis of lactating holstein dairy cows. milk samples of 154 holstein dairy cows were collected from 10 dairy cattle herds in suburb of mashhad-iran. the treatment groups included 104 lactating...

Objective—To determine whether an anti-Salmonella bacterium is involved in control of pathogen load in persistently infected cattle herds. Animals-24 Holstein calves experimentally infected and 39 Holstein cows naturally Infected with Salmonella spp. Procedures—An Escherichia coil (designated as F8E5) that possessed anti-Salmonella activity was isolated from Salmonella-negative bovine feces obt...